A triangular sequence based on concepts of operations on existing sequences: in this case the H(x,n) ( A060821) traditional Hermite is differentiated twice : p(x,n)=-x^2*H''(x,n)+H(x,n).
A137449
A triangular sequence based on concepts of operations on existing sequences: in this case the H(x,n) ( A060821) traditional Hermite is differentiated twice : p(x,n)=-x^2*H''(x,n)+H(x,n).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =-2a(4) =0a(5) =-4a(6) =0a(7) =-12a(8) =0a(9) =-40a(10) =12a(11) =0a(12) =48a(13) =0a(14) =-176a(15) =0a(16) =120a(17) =0a(18) =800a(19) =0a(20) =-608a(21) =-120a(22) =0a(23) =-720a(24) =0a(25) =5280a(26) =0a(27) =-1856a(28) =0a(29) =-1680
External references
- oeis: A137449